Median

Find the median of a stream of binary integers as fast as possible.

Input: 100 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: The median value, printed as a decimal string. The median is defined as the element at index N/2 (i.e., a[50000000]) in the sorted array.

Restrictions:20s512Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.11	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

Date	Author	Language	Status	Score
Jul 7, 2026 11:09	Victor Mercklé	CPPg++14.2.0	Success	2,907
Jul 7, 2026 11:04	Victor Mercklé	CPPg++14.2.0	Success	2,994
Jul 7, 2026 10:59	Victor Mercklé	CPPg++14.2.0	Success	2,915
Jul 7, 2026 10:53	Victor Mercklé	CPPg++14.2.0	Success	2,972
Jul 7, 2026 10:48	Victor Mercklé	CPPg++14.2.0	Success	2,885+26.23 RP
Jul 7, 2026 10:43	Victor Mercklé	CPPg++14.2.0	Success	11,595
Jul 7, 2026 10:31	Victor Mercklé	CPPg++14.2.0	Success	3,361
Jul 7, 2026 10:20	Victor Mercklé	CPPg++14.2.0	Success	12,089
Jul 7, 2026 10:15	Victor Mercklé	CPPg++14.2.0	Success	2,991
Jul 7, 2026 08:21	Victor Mercklé	CSHARP10.0.7	Success	3,137+257.79 RP
Jul 7, 2026 07:47	Victor Mercklé	RUSTrust-1.95.0	Success	3,304
Jul 7, 2026 07:35	Victor Mercklé	ZIG0.16.0	Success	2,987+295.34 RP
Jul 7, 2026 07:25	Victor Mercklé	GOgo1.26.2	Success	3,305
Jul 7, 2026 01:57	Victor Mercklé	CPPg++14.2.0	Success	3,122
Jul 7, 2026 01:46	Victor Mercklé	CPPg++14.2.0	Success	11,801
Jul 5, 2026 13:59	zielaj	CPPclang++18.1.3	Success	2,680+1'533.29 RP
Jul 4, 2026 06:29	Victor Mercklé	CPPg++14.2.0	Success	2,907+17.66 RP
Jul 4, 2026 06:24	Victor Mercklé	CPPg++14.2.0	Success	2,949
Jul 4, 2026 06:11	Victor Mercklé	CPPg++14.2.0	Success	3,022
Jul 4, 2026 05:58	Victor Mercklé	CPPg++14.2.0	Success	11,682
Jul 4, 2026 05:48	Victor Mercklé	CPPg++14.2.0	Success	2,939
Jul 4, 2026 05:43	Victor Mercklé	CPPg++14.2.0	Success	12,159
Jul 4, 2026 05:38	Victor Mercklé	CPPg++14.2.0	Success	2,950
Jul 4, 2026 05:33	Victor Mercklé	CPPg++14.2.0	Success	2,922
Jul 4, 2026 05:28	Victor Mercklé	CPPg++14.2.0	Success	2,952
Jul 4, 2026 05:23	Victor Mercklé	CPPg++14.2.0	Success	2,922+29.03 RP
Jul 4, 2026 05:18	Victor Mercklé	CPPg++14.2.0	Success	3,179
Jul 4, 2026 05:13	Victor Mercklé	CPPg++14.2.0	Success	3,230
Jul 4, 2026 05:08	Victor Mercklé	CPPg++14.2.0	Success	2,947+85.31 RP
Jul 4, 2026 05:03	Victor Mercklé	CPPg++14.2.0	Success	3,351
Jul 4, 2026 04:58	Victor Mercklé	CPPg++14.2.0	Success	11,966
Jul 4, 2026 04:53	Victor Mercklé	CPPg++14.2.0	Success	3,520
Jul 3, 2026 11:48	Victor Mercklé	CPPg++14.2.0	Success	3,025
Jul 3, 2026 11:43	Victor Mercklé	CPPg++14.2.0	Success	3,045
Jul 3, 2026 11:27	Victor Mercklé	CPPg++14.2.0	Success	11,857
Jul 3, 2026 11:21	Victor Mercklé	CPPg++14.2.0	Success	3,072
Jul 3, 2026 11:06	Victor Mercklé	CPPg++14.2.0	Success	11,955
Jul 3, 2026 11:01	Victor Mercklé	CPPg++14.2.0	Success	11,826
Jul 3, 2026 02:42	f0xeri	CPPg++10.5.0	Success	1,009,573+9.91 RP
Jul 2, 2026 15:14	Victor Mercklé	CPPg++14.2.0	Success	11,939
Jul 2, 2026 15:12	A_Shaman	CPPg++10.5.0	Success	14,046
Jul 2, 2026 15:09	Victor Mercklé	CPPg++14.2.0	Success	3,044
Jul 2, 2026 15:07	A_Shaman	CPPg++10.5.0	Success	13,822
Jul 2, 2026 15:04	Victor Mercklé	CPPg++14.2.0	Success	14,863
Jul 2, 2026 15:01	A_Shaman	CPPg++10.5.0	Success	13,645
Jul 2, 2026 14:57	A_Shaman	CPPg++10.5.0	Success	13,667
Jul 2, 2026 14:54	Victor Mercklé	CPPg++14.2.0	Success	3,039
Jul 2, 2026 14:51	A_Shaman	CPPg++10.5.0	Success	13,629+3.80 RP
Jul 2, 2026 14:49	Victor Mercklé	CPPg++14.2.0	Success	3,033
Jul 2, 2026 14:46	A_Shaman	CPPg++10.5.0	Success	13,700+20.20 RP
Jul 2, 2026 14:44	Victor Mercklé	CPPg++14.2.0	Success	11,860
Jul 2, 2026 14:39	Victor Mercklé	CPPg++14.2.0	Success	3,043
Jul 2, 2026 14:32	Victor Mercklé	CPPg++14.2.0	Success	11,877
Jul 2, 2026 14:30	A_Shaman	CPPg++10.5.0	Success	14,090+10.47 RP
Jul 2, 2026 14:27	Victor Mercklé	CPPg++14.2.0	Success	12,206
Jul 2, 2026 14:23	A_Shaman	CPPg++10.5.0	Success	14,603
Jul 2, 2026 14:22	Victor Mercklé	CPPg++14.2.0	Success	3,023+43.20 RP
Jul 2, 2026 14:17	Victor Mercklé	CPPg++14.2.0	Success	9,293
Jul 2, 2026 14:17	A_Shaman	CPPg++10.5.0	Success	14,301+11.92 RP
Jul 2, 2026 14:13	A_Shaman	CPPg++10.5.0	Success	14,549+404.32 RP
Jul 2, 2026 14:11	Victor Mercklé	CPPg++14.2.0	Success	11,998
Jul 2, 2026 14:06	Victor Mercklé	CPPg++14.2.0	Success	3,071
Jul 2, 2026 11:23	Evgenii Zheltonozhskii	RUSTrust-1.95.0	Success	125,137+48.34 RP
Jul 2, 2026 10:44	Evgenii Zheltonozhskii	RUSTrust-1.96.0	Error
Jul 2, 2026 10:27	Evgenii Zheltonozhskii	RUSTrust-1.96.0	Success	316,773+36.57 RP
Jul 2, 2026 01:23	Victor Mercklé	CPPg++14.2.0	Success	12,201
Jul 2, 2026 01:17	Victor Mercklé	CPPg++14.2.0	Success	11,995
Jul 2, 2026 01:12	Victor Mercklé	CPPg++14.2.0	Success	12,570
Jul 2, 2026 01:04	Victor Mercklé	CPPg++14.2.0	Success	3,122
Jul 2, 2026 00:58	Victor Mercklé	CPPg++14.2.0	Success	3,594
Jul 2, 2026 00:51	Victor Mercklé	CPPg++14.2.0	Success	3,195
Jul 2, 2026 00:44	Victor Mercklé	CPPg++14.2.0	Success	3,110
Jul 2, 2026 00:39	Victor Mercklé	CPPg++14.2.0	Success	11,919
Jul 2, 2026 00:34	Victor Mercklé	CPPg++14.2.0	Success	3,098+5.00 RP
Jul 1, 2026 05:12	Victor Mercklé	CPPg++14.2.0	Success	3,125
Jul 1, 2026 05:07	Victor Mercklé	CPPg++14.2.0	Success	3,063+15.91 RP
Jul 1, 2026 05:02	Victor Mercklé	CPPg++14.2.0	Success	3,159
Jun 29, 2026 14:37	Victor Mercklé	CPPg++14.2.0	Success	3,102
Jun 29, 2026 14:24	Victor Mercklé	CPPg++14.2.0	Success	3,434
Jun 29, 2026 01:57	Victor Mercklé	RUSTrust-1.95.0	Success	3,166+47.17 RP
Jun 28, 2026 13:34	Shikhar Soni	CPPg++13.3.0	Success	4,706+51.98 RP
Jun 28, 2026 13:33	Shikhar Soni	CPPg++14.2.0	Success	4,824+44.57 RP
Jun 28, 2026 13:30	Shikhar Soni	CPPclang++18.1.3	Success	4,930+1'184.02 RP
Jun 28, 2026 13:29	Shikhar Soni	CPPclang++18.1.3	Success	42,070
Jun 28, 2026 13:25	Shikhar Soni	CPPclang++18.1.3	Success	11,843+844.38 RP
Jun 28, 2026 07:13	Victor Mercklé	CPPg++14.2.0	Success	12,516
Jun 28, 2026 07:08	Victor Mercklé	CPPg++14.2.0	Success	3,083
Jun 28, 2026 07:03	Victor Mercklé	CPPg++14.2.0	Success	3,156
Jun 28, 2026 06:58	Victor Mercklé	CPPg++14.2.0	Success	12,059
Jun 28, 2026 06:53	Victor Mercklé	CPPg++14.2.0	Success	20,159
Jun 28, 2026 06:46	Victor Mercklé	CPPg++14.2.0	Success	12,155
Jun 28, 2026 06:41	Victor Mercklé	CPPg++14.2.0	Success	17,324
Jun 28, 2026 06:32	Victor Mercklé	CPPg++14.2.0	Success	3,201
Jun 28, 2026 06:27	Victor Mercklé	CPPg++14.2.0	Success	11,985
Jun 28, 2026 02:28	Victor Mercklé	RUSTrust-1.95.0	Success	12,071
Jun 27, 2026 16:36	Victor Mercklé	CSHARP10.0.7	Success	3,413+100.32 RP
Jun 27, 2026 16:25	Victor Mercklé	CSHARP10.0.7	Success	3,895
Jun 27, 2026 16:18	Victor Mercklé	CSHARP10.0.7	Success	12,080
Jun 27, 2026 13:32	Victor Mercklé	RUSTrust-1.95.0	Success	3,270
Jun 27, 2026 13:28	Victor Mercklé	RUSTrust-1.95.0	Success	12,081

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1